# Someone Needs to Invent

**URL:** <https://boards.straightdope.com/t/someone-needs-to-invent/958689>\
**Category:** In My Humble Opinion\
**Created:** [January 31, 2022, 4:20pm UTC](https://boards.straightdope.com/t/someone-needs-to-invent/958689 "2022-01-31T16:20:40Z")\
**Posts on this page:** 1\
**Showing post:** 58

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**Author:** ![eschereal](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/eschereal/32/18939_2.png) [@eschereal](https://boards.straightdope.com/u/eschereal)\
**Post date:** [February 2, 2022, 5:52am UTC](https://boards.straightdope.com/t/someone-needs-to-invent/958689/58 "2022-02-02T05:52:07Z")

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> [@burpo\_the\_wonder\_mutt](#):
>
> Some years back, _This Old House_ was touting this technology (I don’t remember what it’s called) that was basically a small-ish electric heater attached to the water line at each sink. I don’t recall if this eliminated a water heater completely – I hope not.

The is [at least one thread here](https://boards.straightdope.com/t/tankless-water-heaters-what-do-you-think/705602) on the subject. The gas ones, I think, work better, but AAUI the design requires small-diameter tubing to work well, which makes them susceptible to calcification.

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